SSD and BeFS

Can anyone explain how SSD disks are handled by the BeFS? I was just reading about a new solid state laptop, and some comments by users… These two were of interest to me:

"SSD has a finite life. Each sector can only be rewritten a certain number of times before it won’t take new data. There are algorithms that spread the writes over the entire drive, so instead of 10,000-100,000 writes to one sector, you get a trillion writes for the entire drive. That’ll take quite some time - 650KB/sec continuous for 10-100 years. That kind of abuse will kill most hard drives, and your computer would be obsolete by then.

One cool thing is that flash doesn’t fail all at once like a hard drive – so you’ll know when its life is up. Also, as you add capacity, you get even more rewrites."

"It should be noted that without those algorithms (i.e., using standard filesystems/storage methods) people have nuked some USB flash drives into plastic sticks, mainly by setting up Linux systems on them with a swap area (which rapidly goes bye-bye)."

Here’s the laptop:

Most SSD devices that I know of use the drive’s firmware to implement the algorithms that spread the writes evenly across the drive, so the operating system sees them as standard harddrives or removable storage drives and doesn’t need any special software to make them last longer. I’m sure there are other devices that are cheap and don’t include the life-extended software, but I think they are rare because of the difficulty in using them for consumer applications.
–Walter Huf–

Thanks for that answer.

Usually it’s not the filesystem that is the problem, but the OS itself.

If an OS feels the need to constantly write to the drive for no good reason, then it will prematurely wear out the SSDs.